Pulmonary Vasculitis and a Horseshoe Kidney in Noonan Syndrome

Figure 2

(a) Microscopic photograph (H&E, 100x): the vasculitis was seen to involve a pulmonary artery branch; inflammatory cells were seen in the wall of an interlobular blood vessel (vasculitis) and along the alveolar septa (capillaritis)

(b) Microscopic photograph (H&E, 400x): at high power showing inflammatory cells were scattered in and around a large pulmonary branch, pulmonary vasculitis